A. Satish et Rl. Kashyap, ESTIMATION OF SINGULARITIES FOR INTERCEPT POINT FORECASTING, IEEE transactions on aerospace and electronic systems, 32(4), 1996, pp. 1301-1310
In this paper, a recursive approach (an algorithm for estimation of si
ngularity (AES)) is proposed to forecast the intercept point of a targ
et and the pursuing interceptor recognized as the estimated singularit
y of a nodal cubic curve fitted to the data The data comprises directi
on of arrival (DOA) estimates of both target and interceptor obtained
at regular intervals of time using the maximum likelihood (ML) DOA est
imation method. The estimates of coefficients of the cubic polynomial
are given by a recursive least squares solution. From these coefficien
ts, closed-form solutions for angle of interception and intercept time
are obtained which are the forecasted coordinates of the intercept po
int. Experimental results demonstrate performance of the proposed algo
rithm.